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L9300 Datasheet(PDF) 42 Page - STMicroelectronics |
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L9300 Datasheet(HTML) 42 Page - STMicroelectronics |
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42 / 182 page  8.5.4 WSI error handling Table 16. WSI type of error Type of error Detection condition Action Clear SPI flag Restart condition Tracking Configuration TRK out of regulation ON state Set TRK_OUT_OF_REGULATION SPI flag (3:0) in TRK- CAN FAULT register On read N.A. TRK reverse current ON state TRK internal path to VDD1 open, TRK_REVERSE_CURRENT SPI flag (10:7) latched in TRK-CAN FAULT register On read Automatic restart when fault disappears. TRK overtemperature ON state No action if out of regulation is not triggered; output disabled, and T_SD_TRK SPI fault bit (5) latched otherwise in TRK-CAN FAULT register On read Automatic restart with slope control after OT fault disappears. Wheel Speed Sensor Configuration Short to ground, current limitation ON state STG SPI fault (9) latched in WSIRSDRx register. On read N.A. Short to battery ON state STB SPI fault (8) latched in WSIRSDRx register. Sensor supply disconnected to avoid reverse current flow On read Automatic restart after fault disappears. Leakage to battery ON state channel enabled OPENDET SPI fault (6) latched in WSIRSDRx register On read N.A. Leakage to GND ON state channel enabled CURRENT HI SPI fault (7) latched in WSIRSDRx register On read N.A. Parity error, invalid data ON state channel enabled, VDA sensor only INVALID SPI fault (4) latched in WSIRSDRx register On read N.A. No decoding data ON state channel enabled, VDA sensor only NODATA SPI fault (3) latched in WSIRSDRx register On read N.A. Pulse duration counter overflow ON state channel enabled, PWM sensor only PULSE OVERFLOW SPI fault (2) latched in WSIRSDRx register On read N.A. OT ON state WSITEMP fault (5) latched in WSIRSDRx register and output disabled if STG fault is triggered; no action otherwise On read Wheel Speed supply automatic restart after fault disappears. Clear STG and WSITEMP faults and re-enable the faulted channel to enable algorithm and digital outputs. L9300 TRK 1, 2, 3, 4 DS12258 - Rev 4 page 42/182 |
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